/*
 * [New BSD License]
 * Copyright (c) 2011-2012, Brackit Project Team <info@brackit.org>  
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of the Brackit Project Team nor the
 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package org.brackit.xquery.atomic;

import org.brackit.xquery.ErrorCode;
import org.brackit.xquery.QueryException;
import org.brackit.xquery.xdm.Type;

/**
 * 
 * @author Sebastian Baechle
 * 
 */
public class Bool extends AbstractAtomic {
	public final boolean bool;

	public static final Bool FALSE = new Bool(false);

	public static final Bool TRUE = new Bool(true);

	private class DBool extends Bool {
		public DBool(boolean bool, Type type) {
			super(bool);
			this.type = type;
		}

		private final Type type;

		@Override
		public Type type() {
			return this.type;
		}
	}

	public Bool(Boolean bool) {
		this.bool = bool;
	}

	public Bool(boolean bool) {
		this.bool = bool;
	}

	public Bool(Bool v) {
		this.bool = v.bool;
	}

	@Override
	public Type type() {
		return Type.BOOL;
	}

	@Override
	public Atomic asType(Type type) throws QueryException {
		return new DBool(bool, type);
	}

	@Override
	public boolean booleanValue() throws QueryException {
		return bool;
	}

	@Override
	public int cmp(Atomic other) throws QueryException {
		if (other instanceof Bool) {
			return ((bool == ((Bool) other).bool) ? 0
					: (((Bool) other).bool) ? 1 : -1);
		}
		throw new QueryException(ErrorCode.ERR_TYPE_INAPPROPRIATE_TYPE,
				"Cannot compare '%s' with '%s'", type(), other.type());
	}

	@Override
	protected int atomicCmpInternal(Atomic other) {
		return ((bool == ((Bool) other).bool) ? 0 : (((Bool) other).bool) ? 1
				: -1);
	}

	@Override
	public int atomicCode() {
		return Type.BOOL_CODE;
	}

	@Override
	public String stringValue() {
		return Boolean.toString(bool);
	}

	@Override
	public int hashCode() {
		return bool ? 1231 : 1237;
	}
}
